Power Supply Problem?

[westhof]

My old power supply died (500w Enermax piece of crap), and I recently installed a Antec TP-750. Oddly, whenever I play any 3d games, the graphics card jumps from 60C idle, instantly to 80C, and hits 100C in a few minutes and freezes the computer which it never did before. If I put the graphics card in my work computer or keep it in the home computer and use the powersupply from my work computer (Old Thermaltake 430w), it doesn't overheat or really even break 80C after hours of gaming. I've never seen anything like it. Do you think the TP-750 is giving it too much juice through the pcie? Any suggestions to remedy the problem?

 

[jonnyGURU]

What graphics card is this and what kind of cooling does it have? If it's air cooled, does it exhaust back into the inside of the case or out the back?

It wouldn't be "not enough power" because that wouldn't make the temps jump. But it COULD BE that the PSU is not moving as much air as the other two PSU's.

Also, what kind of chassis and how and where you have your intake and exhaust fans situated would help us help you too.

 

[yh125d]

Yeah by upgrading to a more efficient, higher power PSU, the PSU itself may be heating up less, causing its fan to slow down to a crawl and hardly be exhausting anything from your case.


As jonny said, what is your GPU, case and fan setup? Take of your side panel and see if it still heats up like that

 

[westhof]

Thanks for the quick response jonny

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What graphics card is this and what kind of cooling does it have? If it's air cooled, does it exhaust back into the inside of the case or out the back?

Gigabyte 8800GT (http://www.newegg.com/Product/...?Item=N82E16814125088) which blows down to the bottom of the case.

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Also, what kind of chassis and how and where you have your intake and exhaust fans situated would help us help you too.

I have the Raidmax X1 case (http://www.modthebox.com/revie.../x1/raidmax16_new.jpg). I have a 80mm (blowing out the empty PCIe slots to get rid of the GPU heat) and 120mm fan blowing out behind the CPU cooler, as well as 2 120mm fans blowing in the front and 1 80mm blowing in on the side panel into the CPU cooler. Case Temps below the graphics card (at the bottom of the case where it was blowing) were reaching a little over 90F and Ambient room temp was 80F. I must admit my 120mm fans run at 800rpm and don't move much air.

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It wouldn't be "not enough power" because that wouldn't make the temps jump. But it COULD BE that the PSU is not moving as much air as the other two PSU's.


I do think that the TP-750 doesn't move as much air as the old PSU did (it had 2 Fans), and so does the thermaltake one (http://www.newegg.com/Product/...?Item=N82E16817153023).

 

[westhof]

Originally posted by: yh125d
Yeah by upgrading to a more efficient, higher power PSU, the PSU itself may be heating up less, causing its fan to slow down to a crawl and hardly be exhausting anything from your case.


As jonny said, what is your GPU, case and fan setup? Take of your side panel and see if it still heats up like that

Hi yh125d, I tried running with the side panel off last night, and it was still freezing after a few minutes. I also used the nvidia fan utility to change the fan speed to 100%, it didn't fix the problem either. When i touched the heatsink after it froze it was hard to touch because it was still very hot. When I looked at speedfan a few min before it crashed it was at 90C and rising.

 

[yh125d]

Your case cooling sounds plenty good enough, and with the side panel off and the GPU fan at 100% theres no reason it should be that hot. I don't know what would have cause this to happen just now however...

 

[westhof]

I'm going to try and run my old videocard in it tonight and see if it runs into the same problem. It's an EVGA 7950 GX2 which blows out the back of the case.

 

[VirtualLarry]

Call Antec and see what they say.